[iOS] Create IPH bubble for parcel tracking

The original CL was reverted at crrev.com/c/4981265 due to a crash in
BrowserViewControllerTest.

This CL relands the original change along with a fix for the crash
in browser_view_controller_unittest.mm

Screenshot: https://screenshot.googleplex.com/ANMt4xTEHGwXKkn

Low-Coverage-Reason: HARD_TO_TEST browser coordinator
Fixed: 1496427
Change-Id: Id28236b63fa423e7e3ebda057c2033d5d0a2de65
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4978747
Reviewed-by: Mark Cogan <marq@chromium.org>
Commit-Queue: Hira Mahmood <hiramahmood@google.com>
Reviewed-by: Louis Romero <lpromero@google.com>
Cr-Commit-Position: refs/heads/main@{#1219478}